codec: impl AsMut for all Context wrappers

src/codec/decoder/audio.rs

@@ -124,3 +124,9 @@ impl AsRef<Context> for Audio {
 		&self
 	}
 }
+
+impl AsMut<Context> for Audio {
+	fn as_mut(&mut self) -> &mut Context {
+		&mut self.0
+	}
+}

src/codec/decoder/decoder.rs

@@ -134,3 +134,9 @@ impl AsRef<Context> for Decoder {
 		&self
 	}
 }
+
+impl AsMut<Context> for Decoder {
+	fn as_mut(&mut self) -> &mut Context {
+		&mut self.0
+	}
+}

src/codec/decoder/opened.rs

@@ -101,3 +101,9 @@ impl AsRef<Context> for Opened {
 		&self
 	}
 }
+
+impl AsMut<Context> for Opened {
+	fn as_mut(&mut self) -> &mut Context {
+		&mut self.0
+	}
+}

src/codec/decoder/subtitle.rs

@@ -41,3 +41,9 @@ impl AsRef<Context> for Subtitle {
 		&self
 	}
 }
+
+impl AsMut<Context> for Subtitle {
+	fn as_mut(&mut self) -> &mut Context {
+		&mut self.0
+	}
+}

src/codec/decoder/video.rs

@@ -156,3 +156,9 @@ impl AsRef<Context> for Video {
 		&self
 	}
 }
+
+impl AsMut<Context> for Video {
+	fn as_mut(&mut self) -> &mut Context {
+		&mut self.0
+	}
+}